Bitter cold and dangerous wind chills enveloped the tri-state area Sunday, and some areas even saw wind chills as low as -20 degrees.
Monticello saw a -18 degree wind chill early Sunday as wind chill advisories were issued for portions of the Hudson Valley, Sullivan and western Ulster counties.
The rest of Sunday, while sunny, was frigid, and was expected to stay frigid overnight.
Temperatures will rise slightly for the Martin Luther King, Jr. holiday, with temperatures in the 30s and wind chills in the 20s.
There is some potential for frozen precipitation for Monday night into Tuesday morning, mainly north and west of New York City. It doesn't look to be heavy, but it could be icy.